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/** \file search_input.cc */ // -*-c++-*-
// Copyright 1999-2010 Daniel Burrows
// Copyright 2008-2009 Obey Arthur Liu
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
// Local includes:
#include "search_input.h"
#include <aptitude.h>
#include <generic/apt/matching/parse.h>
#include <generic/apt/matching/pattern.h>
#include <generic/views/search_input.h>
// System includes:
#include <boost/format.hpp>
#include <boost/make_shared.hpp>
#include <cwidget/generic/util/transcode.h>
using cwidget::util::transcode;
namespace views = aptitude::views;
namespace aptitude
{
namespace controllers
{
namespace
{
class search_input_impl : public search_input
{
boost::shared_ptr<views::search_input> view;
// Parse the current entry and emit the activated() signal if
// it's valid (otherwise show the error).
void do_search();
// Invoked when the search entry's text changes.
void search_input_changed();
/** \brief A signal emitted when the user searches for a package. */
sigc::signal<void, std::wstring, cwidget::util::ref_ptr<aptitude::matching::pattern> > signal_activated;
public:
// Only public for make_shared.
search_input_impl(const boost::shared_ptr<views::search_input> &_view);
/** \brief Create a new search_input_impl.
*
* \param view The view to manage.
*
* \return A reference-counting wrapper around the new package
* search entry.
*/
static boost::shared_ptr<search_input_impl>
create(const boost::shared_ptr<views::search_input> &view);
std::wstring get_text() const;
/** \brief Set the text of the view and emit a search
* immediately.
*/
void enter_text(const std::wstring &text);
sigc::connection
connect_activated(const sigc::slot<void, std::wstring, cwidget::util::ref_ptr<aptitude::matching::pattern> > &slot);
};
search_input_impl::search_input_impl(const boost::shared_ptr<views::search_input> &_view)
: view(_view)
{
}
boost::shared_ptr<search_input_impl>
search_input_impl::create(const boost::shared_ptr<views::search_input> &
view)
{
return boost::make_shared<search_input_impl>(view);
}
void search_input_impl::do_search()
{
const std::wstring search_term_w(view->get_search_text());
const std::string search_term(transcode(search_term_w));
cwidget::util::ref_ptr<aptitude::matching::pattern> p;
try
{
p = aptitude::matching::parse_with_errors(search_term);
}
catch(aptitude::matching::MatchingException &ex)
{
std::string msg = (boost::format("%s: %s")
% _("Parse error")
% ex.errmsg()).str();
view->set_error_message(transcode(msg));
return;
}
view->set_error_message(std::wstring());
signal_activated(search_term_w, p);
}
void search_input_impl::search_input_changed()
{
const std::wstring limit(view->get_search_text());
bool valid;
try
{
aptitude::matching::parse_with_errors(transcode(limit));
valid = true;
}
catch(aptitude::matching::MatchingException &)
{
valid = false;
}
view->set_input_validity(valid);
}
void search_input_impl::enter_text(const std::wstring &text)
{
view->set_search_text(text);
do_search();
}
sigc::connection
search_input_impl::connect_activated(const sigc::slot<void, std::wstring, cwidget::util::ref_ptr<aptitude::matching::pattern> > &slot)
{
return signal_activated.connect(slot);
}
}
search_input::~search_input()
{
}
boost::shared_ptr<search_input>
create_search_input(const boost::shared_ptr<views::search_input> &view)
{
return search_input_impl::create(view);
}
}
}
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